target/linux/ramips/patches-3.14/999-pci-reset.patch

   1 Index: linux-3.14.18/arch/mips/ralink/reset.c
   2 ===================================================================
   3 --- linux-3.14.18.orig/arch/mips/ralink/reset.c 2014-11-23 00:32:23.268612766 +0100
   4 +++ linux-3.14.18/arch/mips/ralink/reset.c      2014-11-23 02:55:41.492326840 +0100
   5 @@ -11,6 +11,7 @@
   6  #include <linux/pm.h>
   7  #include <linux/io.h>
   8  #include <linux/of.h>
   9 +#include <linux/delay.h>
  10  #include <linux/reset-controller.h>
  11
  12  #include <asm/reboot.h>
  13 @@ -18,8 +19,10 @@
  14  #include <asm/mach-ralink/ralink_regs.h>
  15
  16  /* Reset Control */
  17 -#define SYSC_REG_RESET_CTRL     0x034
  18 -#define RSTCTL_RESET_SYSTEM     BIT(0)
  19 +#define SYSC_REG_RESET_CTRL    0x034
  20 +
  21 +#define RSTCTL_RESET_PCI       BIT(26)
  22 +#define RSTCTL_RESET_SYSTEM    BIT(0)
  23
  24  static int ralink_assert_device(struct reset_controller_dev *rcdev,
  25                                 unsigned long id)
  26 @@ -83,6 +86,11 @@
  27
  28  static void ralink_restart(char *command)
  29  {
  30 +       if (IS_ENABLED(CONFIG_PCI)) {
  31 +               rt_sysc_m32(0, RSTCTL_RESET_PCI, SYSC_REG_RESET_CTRL);
  32 +               mdelay(50);
  33 +       }
  34 +
  35         local_irq_disable();
  36         rt_sysc_w32(RSTCTL_RESET_SYSTEM, SYSC_REG_RESET_CTRL);
  37         unreachable();